Home / 81,574.14-112,622.73-54,388.47

Finding the Fourth Proportional to 81,574.14, 112,622.73 and 54,388.47

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Solution

The fourth proportional to 81,574.14, 112,622.73 and 54,388.47 is: 75,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,574.14 : 112,622.73 = 54,388.47 : x
  2. Step 2: Convert to fraction form
    81,574.14/112,622.73 = 54,388.47/x
  3. Step 3: Cross multiply
    81,574.14x = 112,622.73 × 54,388.47
  4. Step 4: Simplify right side
    81,574.14x = 6,125,377,971.92
  5. Step 5: Solve for x
    x = 6,125,377,971.92/81,574.14
  6. Step 6: Final answer
    x = 75,089.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.